import { ref, onMounted, computed } from "vue";

export default function () {
  let sum = ref(0);

  let bigSum = computed(() => {
    return sum.value * 10;
  });

  function add() {
    sum.value += 1;
  }

  // 钩子函数
  onMounted(() => {
    add();
  });

  return {
    sum,
    add,
    bigSum,
  };
}
